Kia Motors is celebrating the setting of a new Guinness World Record for the lowest fuel consumption in a hybrid gasoline vehicle as a Kia Optima Hybrid drove through 48 adjoining U.S. states.

Optima Hybrid record run

Drivers Wayne Gerdes from Wadsworth, Illinois, and Chris Bernius from New York City, successfully drove a factory-standard 2011 Kia Optima Hybrid sedan through a 12,712 kilometer (7,899 mile) route across America and achieved an average fuel consumption of 27.47 kilometers per liter (64.55 mpg), beating the car's official EPA highway fuel consumption figure by 61.37%.

Guinness World Record holders

Kia's 48 state challenge was completed in 14 days driving an average of 907.67 kilometers per day (564 miles). The Optima Hybrid used just over 5.5 tanks of gasoline to complete the route, recording an average distance of 2,282 km (1,418 miles) between fill-ups. To comply with Guinness World Record guidelines, the Optima Hybrid had to carry two people and their luggage throughout the journey.

The record attempt was verified by Philip Robertson, Adjudicator at Guinness World Records, who also presented the drivers with their Guinness World Record certificate at an official handover ceremony at Kia Motors' manufacturing facility in West Point, Georgia on September 12.

The record set is officially titled "Lowest fuel consumption driving through all 48 contiguous U.S. states in a gasoline hybrid car," which is a new category created by Guinness World Records. In order to qualify for a new record, the Kia Optima Hybrid was required to achieve a minimum of 22.22 km/l (52.27 mpg), which the fuel-sipping Optima Hybrid exceeded by 23 percent.